JP2012112541A - Gas ejection treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save energy in a gas ejection treatment apparatus ejecting hot air to a treatment object.SOLUTION: The gas ejection treatment apparatus includes: a housing 10; a conveyer 20 having air permeability and conveying a treatment object W in the housing 10; and a plurality of upper nozzles 40a/lower nozzles 40b which are disposed in an upper chamber 30a/lower chamber 30b positioned above/below the conveyer 20, respectively, and eject gas in the respective chambers 30a/30b to an upper part and a lower part. The conveyer 20 runs through an outward entrance 12A/outward exit 12B formed in upstream/downstream walls 11a in a width direction into/out of the housing 10. Gas ejection directions of the upper nozzle 40a/lower nozzle 40b formed in the respective chambers 30a/30b in a side close to each wall 11a in a width direction are inclined downward/upward to be separated from the wall 11b in the width direction as advancing downward/upward.

Description

  The present invention relates to an apparatus that performs a process such as drying, heating, cooling, etc. by jetting a gas (high-temperature or normal-temperature air, etc.) to a workpiece W (also called a workpiece) such as a building material or food. .

Conventionally, this type of apparatus has the following structure. One example thereof is described in Patent Document 1.
As shown in part in FIG. 6, a conventional apparatus generally has a housing 510, a conveyor 520, an upper chamber 530a, and a lower chamber 530b.
The housing 510 forms a substantially closed space.
The conveyor 520 has air permeability and has an endless shape (forms an upper forward path portion 521a and a lower return path portion 521b).
The conveyor 520 is supported by a pair of support portions (not shown) located outside the housing 510.
An inlet portion (outward passage inlet portion) and a return passage outlet portion (both not shown) are formed on the upstream wall portion of the housing 510, and an outlet portion (outward passage portion) is formed on the downstream wall portion of the housing 510. An outlet portion 512B) and a return passage inlet portion 514B are formed.
The forward path part 521a of the conveyor 520 flows into the housing 510 through the inlet part (outward path inlet part), and flows out of the housing 510 through the outlet part (outward path outlet part 512B). The return path portion 521b flows into the housing 510 through the return path inlet 514B, and flows out of the housing 510 through the return path outlet.

The upper chamber 530a is located above the conveyor 520 (forward path portion 521a) in the housing 510. The lower chamber 530b is located below the conveyor 520 (outward path portion 521a) in the housing 510.
The upper chamber 530a is provided with a number of nozzles (upper nozzle 540a) that eject hot air (gas) downward. The lower chamber 530b is provided with a number of nozzles (lower nozzles 540b) that eject hot air (gas) upward.

  Then, by circulating the conveyor 520, the workpiece W placed on the conveyor 520 (outward path portion 521a) moves in the housing 510, and hot air blown from each upper nozzle 540a of the upper chamber 530a, And the process of drying, a heating, etc. is performed by receiving the hot air ejected from each lower nozzle 540b of the lower chamber 530b.

  In this type of conventional apparatus, generally, the gas ejection direction of the upper nozzle 540a provided in the upper chamber 530a is downward (vertically downward), and the lower nozzle 540b provided with the lower chamber 530b. The gas ejection direction is upward (vertically upward).

  By the way, in the case where the workpiece W has air permeability, the hot air ejected from the upper nozzle 540a and flowing downward passes through the workpiece W and further flows downward. Similarly, the hot air ejected from the lower nozzle 540b and flowing upward passes through the workpiece W and further flows upward.

  However, when the workpiece W does not have air permeability, it is as follows. The hot air blown out from the upper nozzle 540a and flowing downwards reaches the workpiece W and then reflects by the workpiece W and flows in each direction, or flows in each direction along the upper surface of the workpiece W. Or Similarly, the hot air that is ejected from the lower nozzle 540b and flows upwards reaches the workpiece W and then reflects by the workpiece W to flow in each direction or along the lower surface of the workpiece W. Or flow in each direction.

Therefore, in the vicinity of the inlet portion (outward passage inlet portion) and the outlet portion (outward passage outlet portion 512B) of the housing 510, the hot air blown from the upper nozzle 540a / lower nozzle 540b reaches the workpiece W. Later, a part of the hot air flows out of the housing 510 through the inlet portion (outward passage inlet portion) and the outlet portion (outward passage outlet portion 512B).
As a result, heat energy flows out of the housing 510, which is contrary to energy saving.

JP 2000-146401 A

  This invention makes it a subject to prevent that the gas flows out outside in the gas ejection processing apparatus which ejects gas with respect to a to-be-processed object.

  In order to solve this problem, the invention according to claim 1 is a gas ejection processing device that performs a process on an object by ejecting a gas, and is formed on a housing and an upstream wall portion of the housing. Flowing into the interior of the housing through the inlet portion formed, flowing out of the housing through an outlet portion formed in a wall portion on the downstream side of the housing, and at least the workpiece to be processed in the housing. A conveyor for conveying, an upper chamber provided above the conveyor in the housing, and a plurality of jets in a gas jetting direction provided in the upper chamber and having a component directed downward in the gas in the upper chamber. Before the formation of the inlet and / or the outlet of the housing in the upper chamber. Gas jetting direction of the upper nozzle formed on the side portion of the wall, so as to be separated from the wall portion toward downward, is inclined from below, a gas ejection apparatus.

  “In the vicinity of the wall portion where the inlet portion and / or the outlet portion of the housing is formed among the upper chambers” refers to a plurality of upper chambers along a direction approaching / separating from the wall portion. Is present, it means the vicinity of the edge on the wall side of the upper chamber closest to the wall. The same applies to the inventions according to other claims.

  In the gas ejection processing apparatus according to the present invention, the object to be processed is processed by the gas ejected from the plurality of upper nozzles of the upper chamber while the object to be processed is conveyed in the housing by the conveyor.

At that time, the following operational effects are obtained in the vicinity of the wall portion where the inlet portion and / or the outlet portion of the housing is formed.
That is, in the gas ejection processing device according to the present invention, the gas ejection direction of the upper nozzle provided in the portion of the upper chamber in the side of the wall is from below so as to be separated from the wall as it goes downward. Inclined. For this reason, the gas ejected from the upper nozzle flows away from the wall portion as it goes downward, reaches the object to be processed, and the object to be processed does not have air permeability. The gas then flows in a direction having a component spaced from the wall.
For this reason, the gas that has been ejected from the upper nozzle and has reached the object to be processed is prevented (or reduced) from flowing out from the inlet and / or outlet of the housing. And when the gas is a high temperature thing (hot air), it is prevented that a thermal energy flows out from a housing, and energy saving is achieved.

  The invention according to claim 2 is a gas ejection processing device that performs processing on an object to be processed by ejecting gas, and has a housing and air permeability, and is formed on a wall portion on the upstream side of the housing. It flows into the interior of the housing through the inlet, flows out of the housing through an outlet formed in the wall on the downstream side of the housing, and transports the workpiece at least in the housing. A conveyor, an upper chamber provided above the conveyor in the housing, a lower chamber provided below the conveyor corresponding to the upper chamber, and provided in the upper chamber. A plurality of cylindrical upper nozzles for jetting gas inside in a gas jetting direction having a component directed downward, and the lower chamber; A plurality of cylindrical lower nozzles that eject gas inside the side chamber in a gas ejection direction having a component directed upward, and the inlet portion and / or the outlet portion of the housing in the upper chamber The gas ejection direction of the upper nozzle formed in the wall portion side portion formed with the angle is inclined from below so as to be separated from the wall portion as it goes downward, of the lower chamber. The gas ejection direction of the lower nozzle formed in the wall portion side portion where the inlet portion and / or the outlet portion of the housing is formed is separated from the wall portion as it goes upward. The gas ejection processing device is inclined from above.

“The portion of the upper chamber on the side of the wall portion where the inlet portion and / or the outlet portion of the housing is formed” refers to a plurality of portions along the direction of approaching and separating from the wall portion. When the upper chamber is present, it refers to a portion of the upper chamber closest to the wall portion on the side of the wall portion.
Similarly, “the portion of the lower chamber on the side of the wall portion where the inlet portion and / or the outlet portion of the housing is formed” refers to a direction in which the wall portion approaches and separates from the wall portion. When there are a plurality of lower chambers along the lower chamber, it refers to a portion of the lower chamber closest to the wall portion on the side of the wall portion.
The same applies to the inventions according to other claims.

  In the gas ejection processing apparatus according to the present invention, the object to be processed is conveyed through the housing by the conveyor, and is ejected from the plurality of upper nozzles in the upper chamber and from the plurality of lower nozzles in the lower chamber. The object is processed by the gas.

At that time, the following operational effects are obtained in the vicinity of the wall portion where the inlet portion and / or the outlet portion of the housing is formed.
That is, in the gas ejection processing apparatus according to the present invention, the gas ejection direction of the upper / lower nozzles provided in the portion of the upper / lower chamber on the side of the wall portion is the wall portion as it goes downward / upward. Inclined from below / above so as to be separated from For this reason, the gas ejected from the upper / lower nozzle flows away from the wall portion as it goes downward / upward, reaches the object to be processed, and the object to be processed does not have air permeability. In the case of things, the gas then flows in a direction having a component that is spaced from the wall.
For this reason, the gas that has been ejected from the upper / lower nozzles and has reached the object to be processed is prevented (or reduced) from flowing out from the inlet and / or outlet of the housing. And when the gas is a high temperature thing (hot air), it is prevented that a thermal energy flows out from a housing, and energy saving is achieved.

  The invention according to claim 3 is the gas ejection processing device according to claim 1 or 2, wherein the inlet portion and / or the outlet portion of the housing in the upper chamber is formed. In the portion on the side of the wall portion, there is provided a gas ejection processing device in which an upper through passage that penetrates the upper chamber is formed in a state isolated from the internal space of the chamber.

In the gas ejection processing apparatus according to the present invention, in addition to the operational effects of the gas ejection processing apparatus according to the first or second aspect, the following operational effects can be obtained.
That is, a part of the gas that has been ejected from the upper nozzle and has reached the object to be processed is reflected by the object to be processed and flows in the direction having the upper component through the upper through passage formed in the upper chamber. , And flows in a space above the upper chamber in the housing.
For this reason, the gas that has been ejected from the upper nozzle and has reached the workpiece is prevented (or reduced) from flowing out of the inlet and / or outlet of the housing. And when the gas is a high temperature thing (hot air), it is prevented that a thermal energy flows out from a housing, and energy saving is achieved.

In addition, in the case of the gas ejection processing device according to the invention according to the second aspect of the invention, the following effects can be obtained in addition to the above-described contents.
That is, the space above the conveyor passes through the object to be processed (if it has air permeability) out of the gas ejected from the lower nozzle, or passes through a portion of the conveyor where no object to be processed exists. A part of the gas flowing in the direction having the upper component flows through the through-flow passage formed in the upper chamber into the space above the upper chamber in the housing.
For this reason, the gas ejected from the lower nozzle is also prevented (or reduced) from flowing out from the inlet and / or outlet of the housing. And when the gas is a high temperature thing (hot air), it is prevented that a thermal energy flows out from a housing, and energy saving is achieved.

  The invention according to claim 4 is the gas ejection processing device according to any one of claims 1 to 3, wherein the inlet portion and / or the outlet portion of the housing in the lower surface of the upper chamber. The wall portion on which the wall portion is formed is inclined from the horizontal plane so as to gradually move downward toward the wall portion, and the upper nozzle extends perpendicularly to the lower surface of the upper chamber. It is the gas ejection processing apparatus provided in.

In the gas ejection processing apparatus according to the present invention, the following operational effects are obtained in addition to the operational effects of the gas ejection processing apparatus according to any one of claims 1 to 3.
That is, since the upper nozzle is provided so as to extend perpendicularly to the lower surface of the upper chamber, the upper nozzle can be easily provided on the lower surface of the upper chamber.
And, the portion of the lower surface of the upper chamber on the side of the wall portion where the inlet portion and / or the outlet portion of the housing is formed is inclined from the horizontal plane so as to gradually move downward toward the wall portion. In addition, the gas ejection direction of the upper nozzle provided in the portion of the lower surface of the upper chamber is inclined from below so as to be separated from the wall portion as it goes downward.
For this reason, it becomes possible to manufacture easily the gas ejection processing apparatus of the invention which concerns on any one of Claims 1-3.

  The invention according to claim 5 is the gas ejection processing device according to any one of claims 2 to 4, wherein the inlet portion and / or the outlet of the housing on the upper surface of the lower chamber. The portion on the side of the wall portion where the portion is formed is inclined from the horizontal plane so as to gradually go upward as it goes to the wall portion, and the lower nozzle is perpendicular to the upper surface of the lower chamber. It is the gas ejection processing apparatus provided so that it may extend.

In the gas ejection processing apparatus according to the present invention, the following operational effects are obtained in addition to the operational effects of the gas ejection processing apparatus according to any one of claims 2 to 4.
That is, since the lower nozzle is provided so as to extend perpendicularly to the lower surface of the lower chamber, the lower nozzle can be easily provided on the lower surface of the lower chamber.
And the part by the side of the wall part in which the entrance part and / or exit part of the housing of the lower surface of the lower chamber were formed inclines from a horizontal surface so that it may go gradually upwards as it goes to the said wall part. Therefore, the gas ejection direction of the lower nozzle provided in the portion of the upper surface of the lower chamber is inclined from below so as to be separated from the wall portion as it goes upward.
For this reason, it becomes possible to manufacture easily the gas ejection processing apparatus of the invention which concerns on any one of Claims 2-4.

It is a longitudinal cross-sectional view of the hot air spray drying apparatus of Example 1 of this invention. It is a longitudinal cross-sectional view (a part is the end surface) at the time of cut | disconnecting by the virtual vertical surface extended in the advancing direction of a to-be-processed object. A part thereof is further virtually broken, and the broken end face is shown. It is a longitudinal cross-sectional view of the hot air spray drying apparatus of Example 1 of this invention. It is a longitudinal cross-sectional view at the time of cut | disconnecting by the virtual vertical surface extended perpendicularly | vertically with the advancing direction of a to-be-processed object. A part thereof is further virtually broken, and the broken end face is shown. It is a longitudinal cross-sectional view of the principal part of the hot air ejection drying apparatus of Example 1 of this invention. It is the elements on larger scale of FIG. It is a longitudinal cross-sectional view of the principal part of the hot air ejection drying apparatus of Example 2 of this invention. It is a longitudinal cross-sectional view of the principal part of the hot air ejection drying apparatus of Example 3 of this invention. It is a longitudinal cross-sectional view of the principal part of the conventional hot air ejection drying apparatus.

[Example 1]
Next, the hot-air jet drying apparatus (gas jet processing apparatus) of Example 1 of this invention is demonstrated based on FIGS. 1-3.

As shown in FIGS. 1 and 2, the hot-air jet drying apparatus includes a housing 10, a conveyor 20, an upper chamber 30 a, a lower chamber 30 b, and the like.
And this hot-air ejection drying apparatus dries (processes) to-be-processed objects W, such as a board | plate material and a foodstuff (all are things before a drying process), with a hot air.

The housing 10 has a rectangular parallelepiped shape.
That is, the housing 10 has a pair of width-direction wall portions 11a on the front and rear sides, a pair of length-direction wall portions 11b, a bottom plate portion 11c, and an upper plate portion 11d on the left and right sides. Forming. Each width direction wall portion 11a extends in the width direction of the housing 10, and each length direction wall portion 11b extends in the length direction of the housing 10 (advancing direction of the conveyor 20).

As shown in FIG. 1, the conveyor 20 has an endless shape and extends in the length direction of the housing 10. The conveyor 20 is supported by a pair of support portions 16 located outside the housing 10. Each support portion 16 has a sprocket as a main material, and one of them is provided with a drive motor (not shown).
The conveyor 20 is formed by connecting a large number of pipes extending in the horizontal direction (width direction of the housing 10) perpendicular to the direction of travel in a travel direction (length direction of the housing 10) with a gap. For this reason, air (gas) can flow through the conveyor 20 (through).
The upper part of the endless conveyor 20 is the forward path part 21a, and the lower part is the return path part 21b.
In the drawings, the conveyor 20, the support portion 16 and the like are schematically shown in a simplified manner.

A forward passage inlet portion 12A (inlet portion) and a return passage outlet portion 14A are formed in the upstream width direction wall portion 11a of the housing 10, and a forward passage outlet is formed in the downstream width direction wall portion 11a of the housing 10. A portion 12B (exit portion) and a return passage inlet portion 14B are formed.
The forward path portion 21a of the conveyor 20 flows into the housing 10 through the forward path inlet portion 12A, and flows out of the housing 10 through the forward path outlet portion 12B. The return path portion 21b flows into the inside of the housing 10 through the return path inlet section 14B, and flows out of the housing 10 through the return path outlet section 14A.

In this way, as shown in FIGS. 1 and 3, the conveyor 20 circulates with the workpiece W placed on the forward path portion 21a of the conveyor 20, so that the conveyor 20 (the forward path portion 21a) causes the workpiece to be processed. W is moved.
That is, as shown in FIG. 1, the workpiece W enters the housing 10 through the forward path inlet 12A, moves in the housing 10, and exits the housing 10 through the forward path outlet 12B.

  As shown in FIGS. 1 and 2, the upper chamber 30 a and the lower chamber 30 b are disposed in the housing 10. The upper chamber 30a and the lower chamber 30b are vertically paired, and a plurality of sets are provided along the length direction of the housing 10 (advancing direction of the workpiece W).

The housing 10 is provided with a burner 50 and a duct 60 corresponding to the upper chamber 30a and the lower chamber 30b of each set.
Here, a space above the upper chamber 30 a in the housing 10 is referred to as an upper space 18.
The opening 61 at the upstream end of the duct 60 and the burner 50 (the tip of the outlet) are both located in the upper space 18.

As shown in FIG. 2, the duct 60 is bifurcated in the middle, and each downstream end thereof is connected to the upper chamber 30a and the lower chamber 30b.
As shown in FIGS. 1 and 2, a fan 62 is provided inside the duct 60 (for example, in the vicinity of the opening 61).
For this reason, the air heated to high temperature by the burner 50 flows into the duct 60 through the opening 61 by the fan 62, flows through the duct 60, and flows into the upper chamber 30a and the lower chamber 30b.

Each upper chamber 30 a is located above the forward path portion 21 a of the conveyor 20. Each lower chamber 30 b is located below the forward path portion 21 a of the conveyor 20 and above the return path portion 21 b of the conveyor 20.
As shown in FIGS. 1 to 3, each upper chamber 30a has a substantially rectangular parallelepiped container shape, and a large number of nozzles (upper nozzles 40a) are provided on the horizontal lower surface 31a. Each upper nozzle 40a has a straight cylindrical shape. Hot air (hot air) in the upper chamber 30a is ejected from the upper nozzle 40a.
Similarly, each lower chamber 30b has a substantially rectangular parallelepiped container shape, and a large number of nozzles (lower nozzles 40b) are provided on the horizontal upper surface 31b. Each lower nozzle 40b also has a straight cylindrical shape. Hot air (hot air) in the lower chamber 30b is ejected from the lower nozzle 40b.

As shown in FIG. 1 and FIG. 3, in this hot-air jet drying apparatus, the edge on the side of the pair of width direction walls 11a among the upper chamber 30a and the lower chamber 30b is as follows. (In FIG. 3, only the edge on the downstream side wall 11a is shown, but the same applies to the edge on the upstream side wall 11a).
As described above, the upper chamber 30a and the lower chamber 30b form a pair and a plurality of sets are provided along the length direction of the housing 10. Therefore, the upstream side width direction of the upper chamber 30a and the lower chamber 30b is provided. The edge portion on the side of the wall portion 11a is the side of the width direction wall portion 11a on the upstream side of the upper chamber 30a and the lower chamber 30b in the most upstream set among the plurality of sets of the upper chamber 30a and the lower chamber 30b. It means the edge. Similarly, the edge on the side of the width direction wall portion 11a on the downstream side of the upper chamber 30a and the lower chamber 30b refers to the upper chamber of the most downstream set of the plurality of sets of the upper chamber 30a and the lower chamber 30b. 30a and the edge part by the side of the width direction wall part 11a of the downstream of the lower chamber 30b.

Of the large number of upper nozzles 40a provided in the upper chamber 30a, the upper nozzles 40a provided on the upstream side / downstream side wall portions 11a side of the upper chamber 30a It extends incline from below (vertically below) so as to be separated from the width direction wall portion 11a as it goes downward.
The upper nozzle 40a is referred to as an upper inner inclined nozzle 40ax. The upper inner inclined nozzles 40ax are several rows (2 to 4 rows) of upper nozzles 40a on the side of each width direction wall portion 11a among the many upper nozzles 40a.
That is, the gas ejection direction of the upper inner inclined nozzle 40ax is inclined from below (vertically below) so as to be separated from the width direction wall portion 11a as it goes downward (vertically below). From another viewpoint, it can be said that the gas ejection direction of the upper inner inclined nozzle 40ax is inclined from the lower side (vertically below) so as to go to the inner side of the housing 10 as it goes downward (vertically below).
On the other hand, the upper nozzle 40a of other parts extends downward (vertically downward). The upper nozzle 40a is referred to as an upper normal nozzle 40an. That is, the gas ejection direction of the upper normal nozzle 40an is downward (vertically downward).

Similarly, among the many lower nozzles 40b provided in the lower chamber 30b, the lower nozzles 40b provided in the portion of the lower chamber 30b on the side of each width direction wall portion 11a are arranged upward ( It extends incline from above (vertically upward) so as to be separated from the width direction wall portion 11a as it goes upward (vertically upward).
The lower nozzle 40b is referred to as a lower inner inclined nozzle 40bx. The lower inner inclined nozzle 40bx is the lower nozzle 40b of several rows (2 to 4 rows) on the side of each width direction wall portion 11a among the many lower nozzles 40b.
That is, the gas ejection direction of the lower inner inclined nozzle 40bx is inclined from above (vertically upward) so as to be separated from the width direction wall portion 11a as it goes upward (vertically upward). From another viewpoint, it can be said that the gas ejection direction of the lower inner inclined nozzle 40bx is inclined from the upper side (vertically upward) so as to go to the inner side of the housing 10 as it goes upward (vertically upward).
On the other hand, the lower nozzle 40b of other parts extends upward (vertically upward). The lower nozzle 40b is referred to as a lower normal nozzle 40bn. That is, the gas ejection direction of the lower normal nozzle 40bn is upward (vertically upward).

  A plurality of upper through passages 35a are provided in a portion of the upper chamber 30a on the side of each width direction wall portion 11a. The upper through flow path 35a is a flow path that penetrates the upper chamber 30a while being isolated from the internal space of the upper chamber 30a. That is, the upper through passage 35a communicates the space between the upper chamber 30a and the lower chamber 30b and the upper space 18 (the space above the upper chamber 30a).

Next, the effect of this hot-air jet drying device (gas jet processing device) will be described.
As shown in FIG. 1, a workpiece W that does not have air permeability, such as a plate material in a state before the drying process, is placed on the forward path portion 21 a of the conveyor 20. Then, as the conveyor 20 circulates, the workpiece W moves in the housing 10 from the forward passage inlet portion 12A (inlet portion) to the forward passage outlet portion 12B (exit portion).
On the other hand, in the housing 10, hot air is blown downward (vertically downward) or obliquely downward from the upper nozzle 40a of the upper chamber 30a, and hot air is upwardly (vertically upward) or obliquely upward from the lower nozzle 40b of the lower chamber 30b. Is ejected.
For this reason, the workpiece W moving in the housing 10 receives hot air from both above (including obliquely above) and below (including obliquely below) and is dried.

At this time, as described above with reference to FIG. 3 and the like, in this hot air jet drying apparatus, hot air is jetted downward (vertically downward) from the upper normal nozzle 40an, and hot air is blown upward (vertically upward) from the lower normal nozzle 40bn. Is ejected.
For this reason, as shown in FIG. 3, since the workpiece W does not have air permeability, the hot air blown from the upper normal nozzle 40an / lower normal nozzle 40bn reaches the workpiece W, Reflected by the workpiece W and flowing in each direction (in principle, evenly in each direction, depending on the shape of the workpiece), or in each direction along the top / bottom surface of the workpiece W (also in principle) Try to flow evenly in each direction).

On the other hand, as described above with reference to FIG. 3 and the like, the direction in which the upper inner inclined nozzle 40ax is inclined from below (vertically below) so as to be separated from the width direction wall portion 11a as it goes downward (vertically below). Hot air is blown out.
For this reason, after the hot air jetted from the upper inner inclined nozzle 40ax reaches the workpiece W, it flows in a direction having a component that is reflected by the workpiece W and separated from the width direction wall portion 11a. It flows in the direction away from the width direction wall part 11a along the upper surface of the workpiece W.
That is, the hot air ejected from the upper inner inclined nozzle 40ax flows in a direction having a component separated from the width direction wall portion 11a both before reaching the workpiece W and after reaching the workpiece W. .

Similarly, hot air is ejected from the lower inner inclined nozzle 40bx in a direction inclined from above (vertically upward) so as to be separated from the width direction wall portion 11a as it goes upward (vertically upward).
For this reason, after the hot air ejected from the lower inner inclined nozzle 40bx reaches the workpiece W, it flows in a direction having a component that is reflected by the workpiece W and separated from the width-direction wall portion 11a. It flows in the direction away from the width direction wall part 11a along the upper surface of the workpiece W.
That is, the hot air ejected from the lower inner inclined nozzle 40bx has a component that is separated from the width direction wall portion 11a before reaching the workpiece W and after reaching the workpiece W. Flowing.

For this reason, in the vicinity of the width direction wall part 11a, it flows in the direction which has the component which is ejected from the upper side inner side inclination nozzle 40ax and the lower side inner side inclination nozzle 40bx, and is separated from the width direction wall part 11a. The hot air that is blown out from the upper normal nozzle 40an and the lower normal nozzle 40bn and reaches the workpiece W and flows in a direction having a component approaching the width direction wall portion 11a is canceled by the hot air (regardless of front and rear). As a whole, the hot air flows in a direction having a component separated from the width direction wall portion 11a.
For this reason, the hot air jetted from the upper nozzle 40a (upper inner inclined nozzle 40ax, upper normal nozzle 40an) and lower nozzle 40b (lower inner inclined nozzle 40bx, lower normal nozzle 40bn) is subsequently transferred to the housing 10. Outflow passage 12A (entrance) (not shown in FIG. 3) and outflow passage 12B (outlet) are prevented or reduced.

Similarly, as shown in FIG. 3, in the vicinity of the width direction wall portion 11a on the upper side of the workpiece W, the workpiece is ejected from the upper nozzle 40a (upper inner inclined nozzle 40ax, upper normal nozzle 40an). After reaching W, a part of the hot air that is reflected by the workpiece W and flows in the direction having the upper component flows (returns) to the upper space 18 through the upper through passage 35a.
For this reason, out of the hot air that has been ejected from the upper nozzle 40a (upper inner inclined nozzle 40ax, upper normal nozzle 40an) and has reached the workpiece W, that portion is the forward passage inlet portion 12A (inlet portion) of the housing 10 (FIG. 3 does not flow out), and does not flow out from the outward passage 12B (outlet portion).
Also by this, the hot air that has been ejected from the upper nozzle 40a (upper inner inclined nozzle 40ax, upper normal nozzle 40an) and reached the workpiece W is the forward passage inlet portion 12A (inlet portion) of the housing 10 (in FIG. 3). (Not shown), it is prevented or reduced from flowing out from the forward passage outlet portion 12B (exit portion).

Of the hot air blown from the lower nozzle 40b (the lower inner inclined nozzle 40bx, the lower normal nozzle 40bn), the conveyor 20 (the forward path portion 21a) passes through a portion where the workpiece W does not exist, A part of what flows in the direction having the upper component in the space above the conveyor 20 (outward path portion 21a) flows (returns) to the upper space 18 through the upper through flow path 35a.
Therefore, the hot air jetted from the lower nozzle 40b (lower inner inclined nozzle 40bx, lower normal nozzle 40bn) is also correspondingly the forward passage inlet portion 12A (inlet portion) of the housing 10 (illustrated in FIG. 3). None), it is prevented or reduced from flowing out from the outlet 12B (outlet) for the forward path.

  As described above, in this hot air jet drying device (gas jet processing device), hot air passes through the forward passage inlet portion 12A (inlet portion) and the forward passage outlet portion 12B (outlet portion) of the housing 10 to the outside of the housing 10. Thus, it is prevented or reduced from flowing out and energy saving is achieved.

[Example 2]
Next, a hot air jet drying apparatus (gas jet processing apparatus) according to a second embodiment of the present invention will be described with reference to FIG. 4 with a focus on differences from the first embodiment. In the second embodiment, elements that are the same as or correspond to those in the first embodiment are denoted by the same or corresponding reference numerals (the last two digits are the same), and description thereof will be omitted as appropriate. The same applies to the following.

A large number of nozzles (upper nozzles 140a) are provided on the horizontal lower surface 31a of each upper chamber 30a. Each upper nozzle 140a (its base end) is provided perpendicular to the horizontal lower surface 31a of the upper chamber 30a.
Similarly, a large number of nozzles (lower nozzles 140b) are provided on the horizontal upper surface 31b of each lower chamber 30b. Each lower nozzle 140b (its base end) is provided perpendicular to the horizontal upper surface 31b of the lower chamber 30b.

Of the large number of upper nozzles 140a, the upper normal nozzle 140an has a straight cylindrical shape, and the gas ejection direction of the upper normal nozzle 140an is downward (vertically downward).
On the other hand, the upper inner inclined nozzle 140ax has a cylindrical shape and is bent at an intermediate portion thereof. For this reason, the substantially half part on the base end side of the upper inner inclined nozzle 140ax is directed downward (vertically downward), and the substantially half part on the tip end side is directed in the width direction toward downward (vertically downward). It inclines from the downward (vertically downward) so that it may separate from the wall part 11a.
For this reason, the gas ejection direction of the upper inner inclined nozzle 140ax is inclined from below (vertically below) so as to be separated from the width direction wall portion 11a as it goes downward (vertically below).

Similarly, among the many lower nozzles 140b, the lower normal nozzle 140bn has a straight cylindrical shape, and the gas ejection direction of the lower normal nozzle 140bn is upward (vertically upward).
On the other hand, the lower inner inclined nozzle 140bx has a cylindrical shape and is bent at an intermediate portion thereof. For this reason, the substantially half part on the base end side of the lower inner inclined nozzle 140bx is directed upward (vertically upward), and the approximately half part on the tip end side is increased in width toward the upper part (vertically downward). It inclines from upper direction (vertical upper direction) so that it may separate from the direction wall part 11a.
For this reason, the gas ejection direction of the lower inner inclined nozzle 140bx is inclined from above (vertically upward) so as to be separated from the width direction wall portion 11a as it goes upward (vertically upward).

Also in the hot air jet drying device (gas jet processing device) of the second embodiment, the same effects as the hot air jet drying device (gas jet processing device) of the first embodiment can be obtained.
In the hot-air jet drying device (gas jet processing device) according to the second embodiment, all the upper nozzles 140a / lower nozzles 140b include the upper inner inclined nozzles 140ax / lower inner inclined nozzles 140bx. Since the upper portion is provided perpendicular to the lower surface 31a of the upper chamber 30a / the upper surface 31b of the lower chamber 30b, the mounting operation is easier than in the first embodiment.

[Example 3]
Next, a hot air jet drying apparatus (gas jet processing apparatus) according to a third embodiment of the present invention will be described with reference to FIG.

In this hot-air spray drying apparatus, the edge on the side of the pair of width-direction walls 11a in each of the upper chamber 230a and the lower chamber 230b is configured as follows (in FIG. 5, the width on the downstream side). Only the edge portion on the side of the direction wall portion 11a is shown, but the same applies to the edge portion on the side of the width direction wall portion 11a on the upstream side).
As described above, the upper chamber 230a and the lower chamber 230b form a pair and a plurality of sets are provided along the length direction of the housing 10, so that the upstream side width direction of the upper chamber 230a and the lower chamber 230b is provided. The edge portion on the side of the wall portion 11a is the side of the width direction wall portion 11a on the upstream side of the uppermost chamber 230a and the lower chamber 230b of the most upstream set among the plurality of sets of the upper chamber 230a and the lower chamber 230b. It means the edge. Similarly, the edge on the side of the width direction wall portion 11a on the downstream side of the upper chamber 230a and the lower chamber 230b is the uppermost chamber of the most downstream set of the plurality of sets of the upper chamber 230a and the lower chamber 230b. 230a and the edge part by the side of the width direction wall part 11a of the downstream of the lower chamber 230b.

The lower surface 231a of the upper chamber 230a is basically horizontal. However, of the lower surface 231a of the upper chamber 230a, the portions on the upstream and downstream side in the width direction wall portion 11a are inclined from the horizontal plane so as to gradually go downward toward the width direction wall portion 11a. .
The inclined portion of the lower surface 231a of the upper chamber 230a is referred to as an inclined lower surface 231ax. On the other hand, the other horizontal portion of the lower surface 231a of the upper chamber 230a is referred to as a normal horizontal lower surface 231an.

A number of upper nozzles 240a are provided on the lower surface 231a of the upper chamber 230a.
Of the large number of upper nozzles 240a, the upper nozzle 240a provided on the normal horizontal lower surface 231an is referred to as an upper normal nozzle 240an. On the other hand, the upper nozzle 240a provided on the inclined lower surface 231ax is referred to as an upper inner inclined nozzle 240ax.

Each upper nozzle 240a has a straight cylindrical shape. Each upper nozzle 240a is provided perpendicular to the lower surface 231a of the upper chamber 230a at the base end.
For this reason, the gas ejection direction of the upper normal nozzle 240an is downward (vertically downward).
On the other hand, the gas ejection direction of the upper inner inclined nozzle 240ax is inclined from below (vertically below) so as to be separated from the width direction wall portion 11a as it goes downward (vertically below).

  The upper inner inclined nozzle 240ax is shorter as it is closer to each width direction wall portion 11a side. The upper normal nozzle 240an is longer than the upper inner inclined nozzle 240ax. Thus, the tip portions (lower end portions) of all the upper nozzles 240a are located at substantially the same height.

Similarly, the upper surface 231b of the lower chamber 230b is basically horizontal. However, of the lower surface 231a of the upper chamber 230a, the portions on the upstream and downstream side in the width direction wall portion 11a are inclined from the horizontal plane so as to gradually go upward toward the width direction wall portion 11a. .
The inclined portion of the upper surface 231b of the lower chamber 230b is referred to as an inclined upper surface 231bx. On the other hand, the other horizontal portion of the upper surface 231b of the lower chamber 230b is referred to as a normal horizontal upper surface 231bn.

A number of lower nozzles 240b are provided on the upper surface 231b of the lower chamber 230b.
Of the many lower nozzles 240b, the lower nozzle 240b provided on the normal horizontal upper surface 231bn is referred to as a lower normal nozzle 240bn. On the other hand, the lower nozzle 240b provided on the inclined upper surface 231bx is referred to as a lower inner inclined nozzle 240bx.

Each lower nozzle 240b has a straight cylindrical shape. And each lower nozzle 240b is provided in the base end part perpendicularly | vertically with respect to the lower surface 231a of the upper chamber 230a.
For this reason, the gas ejection direction of the lower normal nozzle 240bn is upward (vertically upward).
On the other hand, the gas ejection direction of the lower inner inclined nozzle 240bx is inclined from above (vertically upward) so as to be separated from the width direction wall portion 11a as it goes upward (vertically upward).

  The lower inner inclined nozzle 240bx is shorter as it is closer to each width direction wall portion 11a side. The lower normal nozzle 240bn is longer than the lower inner inclined nozzle 240bx. Thus, the tip portions (upper end portions) of all the lower nozzles 240b are positioned at substantially the same height.

The hot air jet drying apparatus (gas jet processing apparatus) according to the third embodiment can provide the same effects as the hot air jet drying apparatus (gas jet processing apparatus) according to the first embodiment.
In the hot-air jet drying device (gas jet processing device) of the third embodiment, all the upper nozzles 240a / lower nozzles 240b include the upper inner inclined nozzles 240ax / lower inner inclined nozzles 240bx. This is provided perpendicular to the lower surface 231a of the upper chamber 230a / the upper surface 231b of the lower chamber 230b, so that the mounting operation is easier than in the first embodiment.
Further, in the hot air jet drying device (gas jet processing device) of the third embodiment, all the upper nozzles 240a / lower nozzles 240b are straight, including the upper inner inclined nozzle 240ax / lower inner inclined nozzle 240bx. The manufacture is easier than in the case of the second embodiment.

  The above is merely an example of the present invention, and it is needless to say that the present invention can be implemented in various modifications based on the knowledge of those skilled in the art.

For example, among the upper nozzles 40a, 140a, 240a / lower nozzles 40b, 140b, 240b, only the row closest to the width direction wall portion 11a (one row) is the upper inner inclined nozzles 40ax, 140ax, 240ax / lower inner side. The inclined nozzles 40bx, 140bx, and 240bx may be used.
Further, the upper through passage 35a is not necessarily provided in the upper chambers 30a and 230a.
Further, the lower chambers 30b and 230b are not provided, and only the upper chambers 30a and 230a may be provided.

Further, the conveyor (20) is not limited to the above-described one, and a plate having a plurality of (many) holes and having air permeability (including a net-like material) or a plate having no air permeability may be disposed in the traveling direction. A plurality of (multiple) connected embodiments may be used.
In that case, each said support part (16) may be made into the structure where said board does not invert up and down, when a conveyor (20) switches between an outward path part (21a) and a return path part (21b). . In that case, the drying process may be performed when the workpiece W is positioned on the return path part (21b) of the conveyor (20).

10 Housing 20 Conveyor 30a, 230a Upper chamber 30b, 230b Lower chamber 31a, 231a Lower surface 231an Normal horizontal lower surface 231ax Inclined lower surface 31b, 231b Upper surface 231bn Normal horizontal upper surface 231bx Inclined upper surface 40a, 140a, 240a Upper nozzle 40an, 140an, 240an Normal nozzles 40ax, 140ax, 240ax Upper inner inclined nozzles 40b, 140b, 240b Lower nozzles 40bn, 140bn, 240bn Lower normal nozzles 40bx, 140bx, 240bx Lower inner inclined nozzles

Claims (5)

A gas ejection processing device that performs processing on an object by ejecting gas,
A housing;
Flows into the interior of the housing through an inlet formed in the upstream wall of the housing, flows out of the housing through an outlet formed in the downstream wall of the housing, A conveyor for conveying the object to be processed in at least the housing;
An upper chamber provided above the conveyor in the housing;
A plurality of cylindrical upper nozzles that are provided in the upper chamber and eject gas in the upper chamber in a gas ejection direction having a component directed downward;
The gas ejection direction of the upper nozzle formed in the portion of the upper chamber in the side of the wall portion where the inlet portion and / or the outlet portion of the housing is formed is from the wall portion as it goes downward. Inclined from below to be separated,
Gas ejection processing device. A gas ejection processing device that performs processing on an object by ejecting gas,
A housing;
The housing has air permeability, flows into the housing through an inlet portion formed in the upstream wall portion of the housing, and passes through an outlet portion formed in the downstream wall portion of the housing. A conveyor that flows out to the outside and conveys the object to be processed in at least the housing;
An upper chamber provided above the conveyor in the housing;
A lower chamber provided below the conveyor corresponding to the upper chamber;
A plurality of cylindrical upper nozzles that are provided in the upper chamber and that eject gas in the upper chamber in a gas ejection direction having a component directed downward, and are provided in the lower chamber, A plurality of cylindrical lower nozzles for ejecting gas in a gas ejection direction having a component directed upward;
The gas ejection direction of the upper nozzle formed in the portion of the upper chamber in the side of the wall portion where the inlet portion and / or the outlet portion of the housing is formed is from the wall portion as it goes downward. Inclined from below to be separated,
Of the lower chamber, the gas ejection direction of the lower nozzle formed in the wall portion side portion where the inlet portion and / or the outlet portion of the housing is formed is the wall as it goes upward. Inclined from above so as to be separated from the part,
Gas ejection processing device. The gas ejection processing device according to claim 1 or 2,
A portion of the upper chamber on the side of the wall portion where the inlet portion and / or the outlet portion of the housing are formed penetrates the upper chamber in a state of being isolated from the internal space of the chamber. An upper through passage is formed,
Gas ejection processing device. The gas ejection processing device according to any one of claims 1 to 3,
A portion of the lower surface of the upper chamber on the side of the wall portion where the inlet portion and / or the outlet portion of the housing is formed is inclined from the horizontal plane so as to gradually go downward as it goes to the wall portion. And
The upper nozzle is provided so as to extend perpendicular to the lower surface of the upper chamber.
Gas ejection processing device. A gas ejection processing device according to any one of claims 2 to 4,
Of the upper surface of the lower chamber, the portion of the housing on the side of the wall portion where the inlet portion and / or the outlet portion is formed is inclined from the horizontal plane so as to gradually move upward toward the wall portion. And
The lower nozzle is provided so as to extend perpendicular to the upper surface of the lower chamber.
Gas ejection processing device.

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